Reload tool on combo list

Client side caching of data via stores is one of the most useful features of Ext JS.

However in a multi user environment, you may wish to give users the ability to refresh their stores, perhaps to reflect a change made by another user. This is easy to do with grids as you can add a refresh tool to the panel title. But how do you go about providing a nice refresh button for a combo box?

By overriding the default initlist function of the combo box you can render a nice refresh tool in the combo view's title.

But I still got a line under the buttons and I can't explain myself why (also without my 10px hack). Can someone please have a look at it and try it with Version 2.2? I've added a small screenshot to show you my problem. Thats not a Show-Stopper for my development process, but looks ugly